Mechanism operated by fluid pressure



\Aug. 4, 1936. J. DE KONING .I l `MECHANISM OPERATED BY FLUID PRESSURE Filed March 15, 1936 2 Sheets-Sheet l v INVENTOR. C02 1D e 7 039117, y

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Aug. 4, 1936.I J. DE KONING MEGHANISM OPEBATED BY FLUID PRESSURE Filed March 13, 1936 2 Sheets-Sheet 2 IVENTOR. L-ccob @Ibyzinj L3 AJJA +3 A TT ORNE YS.

Patented Aug. 4, 1%36 UNHTED STATES PATENT GFFICE MECHANISMI OPERATED BY FLUID PRESSURE Application March 13, 1936, Serial No. 68,666

9 Claims.

The present invention relates to fluid pressureoperated machines; and its object is, generally, to provide improved means for operating by fluid under pressure a machine having relatively movable parts or elements; and more particularly, to provide in such a machine a conduit for the fluid composed of rigid members of metal or the like; and further, to provide in such a machine passages or pipes in and connecting said movable parts whereby their movement by such a conduit may be effected.

This and any other and more specic objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the

illustrative structure and mechanism particularly described in the body of this 'speciiication and illustrated by the accompanying drawings, in which:

Figure l is an elevational front view of a sur- 20.: face grinding machine, its upper portion and the middle portion oi its front wall being broken away, the cylinder which has a piston for reciprocating its work-carrying table being shown in axial section and the valve structure controlling the operation thereof being shown in transverse section;

Figure 2 is an elevational left hand-side View of upper portions of the same, partially broken away, the front wall or" the machine and other 30 parallel walls being shown in vertical section;

Figure 3 is an axial sectional view, taken on line 3 3 of Figure 5, of a conduit for fluid under pressure passing between relatively movable parts or elements of the machine;

Figure 4 is a transverse sectional view of said conduit taken on line I-i of Figure 3;

Figure 5 is a transverse sectional View thereof taken on line if- 5 of Figure 3;

Figure 6 is a transverse sectional view of the 4C. same taken on line 6-5 of Figure 3;

Figure 7 is a top plan view of the same and of the parallel conduit for exhausting or returning the uid, certain parts being shown in horizontal section taken on line 'I-l of Figure 2.

45 In these drawings is illustrated a machine having three parts or elements relatively movable in transverse directions, the particular machine shown being a surface grinding machine, having means for thus moving said parts by iiuid un- 50 der pressure, including a conduit comprising rigid relatively movable members of metal or the like.

The illustrated machine has a hollow base or supporting portion I with vertical walls-the front wall 2, rear wall 3 and intermediate wall 0- 55 and the horizontal top 5 which has the usual ways 6, 'I on which the member 8 is slid or reciprocated by suitable means as the shaft 9 journaled at I0 in the base and threaded in the nut sleeve indicated at II in the downwardly extending portion I2 of the slidable member 8. This member has 5'* the usual ways I3, I4 on which the work-carrying table I is reciprocated in a directionV transverse to the sliding movement of said member 8.

The said table is thus reciprocated by uid pressure operating through the following means. l0y From a tank I6 in the hollow base I, containing a suitable fluid, as oil, the fluid is pumped by a rotary pump indicated at I I through the pipes I8, I 9 into the cylinder portion of a conduit, said cyly inder being mounted on the vertical wall 4 of the 15l base. The fluid enters this cylinder between the spaced heads 2l, 22 of the hollow piston portion 23 of the conduit and passing through the holes 261 of this piston and along its central bore 25 and the communicating passage 26 in the depending 20 portion I2 of said member 8 and through the pipe 2l enters the valve casing 28 mounted on said portion I2.

In the position of the parts seen in Figure 1 the fluid passes through the passage 29 in the rotary 25 valve 56 and thence through the pipe 30 into the cylinder 3l mounted on said member 8 and slides the work table I5 toward the left hand-side of Figure 1 by this cylinders piston 32 having the head 33 and connected at 34 with said table. In 30 this movement, the iluid in this cylinder at the left hand-side of said piston head is expelled or exhausted through the pipe 35 leading therefrom into the passage 36 of the valve 50 and thence through the pipe 3l, its communicating passage 38v 35 in said portion I2 of the slidable member 8 and through the pipe 39, its telescoping pipe 40 and its downward extension 4I, thus discharging the fluid into the tank I6. In the oppositely turned position of the rotary valve the fluid passes 40 from the pipe 2l through the pipe 35 and into the left hand-end of cylinder 3| to move the piston 32 toward the right hand-side of Figure 1 thus sliding the table I5 and reversing its previous movement. In this movement the fluid in the right 4-5 hand-end o1" this cylinder is exhausted passing through the pipes 30, 3l, 39, 40, 4I.

The rotary valve 50 is turned to its opposite positions in the usual manner by the movement of the work table I5 whose adjustably threaded 50 stops l2 strike the lever arm i3 of. this rotary valve in the opposite movements of said table respectively.

It will be seen that said conduits cylinder portion 2t and hollow piston portion 23 move rela- 55 tively to each other and with the movement of the slidable member 8 on the base I and that the fluid discharge telescoping pipes 39, lll being parallel with said conduit mo-ve in the same manner; and that the movement, in either direction, of the piston portion 23 in the cylinder portion 20 of said conduit is balanced and in nowise resisted or interfered with by the fluid in said cylinder because the piston heads 2 l, 22 carry the fluid in the cylinder with and between them in such movements. It is manifest that relatively movable parts or elements of various machines may be connected by such a conduit for the like purpose. The said conduit is composed of rigid metallic parts throughout, whereby the use of a flexible pipe of rubber or the like as hitherto employed for the passage of. fluid under pressure from one to another part or element of a machine, is obviated.

The machines grinding wheel is indicated at 44, and a motor for driving the same at 45.

The piston 23 may have portions loosely jointed by a pin 46 as shown to provide certain flexibility, and vents 41 are shown at the ends of cylinder 20 to discharge oil leakage therefrom.

The invention being intended to be pointed out in the claims, is not to be limited to or by details of construction and arrangement of the particular embodiment thereof illustrated by the drawings or hereinbefor-e described.

I claim:

' 1. In a machine which includes a basic first part, a second part operatively movable reciprocatingly thereon and a third part having an operative reciprocating movement on said second part transverse the movement thereof, means for reciprocating said third part by fluid under pressure, comprising: a cylinder carried by said first part having a medial fluid inlet; a piston conneoted with said second part having spaced piston heads in the cylinder on the opposite sides respectively of said inlet and a fluid passage leading therefrom; a cylinder carried by said second part containing a piston connected with said third part; a valve casing carried by said second part; fluid passages leading from the passage in the first-mentioned piston to the valve casing and from said casing to the second-mentioned cylinder; a reversing valve in said casing movable to opposite positions for reciprocating said third part.

2. In a machine which includes a basic ilrst part, a second part operatively movable thereon and a third part having an operative reciprocating movement on said second part transverse the movement thereof: fluid-operated means carried by said second part and connected with said third part for reciprocating the same; a valve carried by said second part for controlling said means; a fluid conduit comprising reciprocating members one of which is carried by said first part and has an inlet for fluid under pressure the other member being carried by said second part, said members and said second part having passages affording fluid communication between said inlet and said means controlled by said valve.

3. In amachine winch includes a basic ilrst part, a second part operatively movable thereon and a third part having an operative movement on said second part transverse the movement thereof; means carried by said second part and connected with said third part for moving the same by fluid under pressure; a continuous passage for said fluid to said means including a conduit having reciprocating members carried by said first and second parts respectively.

4. In a machine which includes a basic first part, a second part operatively movable thereon and a third part having an operative movement on said second part transverse the movement thereof; means carried by said second part and connected with said third part for moving the same by fluid under pressure; a continuous passage for said fluid to said means including a conduit having reciprocating members carried by said first and second parts respectively; a continuous passage for exhausting the fluid from said means including reciprocating members parallel with said first-mentioned members and carried by said first and second parts respectively.

5. In a surface grinding machine having a base, a platen operatively movable reciprocatingly on the base and a work-carrying table having an operative reciprocating movement on the platen transverse the movement thereof, means for reciprocating the table by fluid pressure, comprising: a cylinder carried by the base having an inlet for fluid under pressure; a piston connected with the platen having a longitudinal fluid passage leading from the interior of the cylinder; a cylinder carried by the platen having a piston connected with the table for reciprocating the same; a continuous fluid passage leading from the passage in the first-mentioned piston to the second-mentioned cylinder; a reversing valve carried by the platen for controlling said passage.

6. In a surface grinding machine having a base, a platen operatively movable reciprocatingly on the base and a work-carrying table having an operative reciprocating movement on the platen transverse the movement thereof, means for reciprocating the table by fluid pressure, comprising: a cylinder carried by the base having an inlet for fluid under pressure; a piston connected with the platen having a longitudinal fluid passage leading from the interior of the cylinder; a cylinder carried by the platen having a piston connected with the table for reciprocating the same; a continuous fluid passage leading from the passage in the first-mentioned piston to the second-mentioned cylinder; a reversing valve carried by the platen for controlling said passage; means operated by the movement of the table for moving the valve to move the table in alternately opposite directions.

In a machine which includes a basic first part, a second part operatively movable thereon and a third part having an operative movement on said second part; means carried by said second part and connected with said third part for moving the same by fluid under pressure; a continuous passage for said fluid to said means including a conduit having reciprocating members carried by said rst and second parts respectively.

8. In a machine which has relatively movable parts: means for thus moving said parts by fluid under pressure; means for supplying fluid under pressure to the first-mentioned means for operating the same, including a conduit for the fluid which comprises a cylinder carried in connection with one of said parts having a medial fluid inlet, and a piston connected with the other one of said parts having spaced piston heads in the cylinder at the opposite sides respectively of said inlet and a fluid passage leading from the cylinder between the piston heads.

9, In a machine which has parts relatively movable reciprocatingly: means for thus moving said parts by uid under pressure; means for supplying fluid under pressure to the rst-mentioned means for operating the same, including a conduit for the uid which comprises a cylinder carried in connection with one of said parts having a medial fluid inlet, and a piston connected with the other one of said parts having spaced piston heads in the cylinder at the opposite sides respectively of said inlet and a uid passage leading from the cylinder between the piston heads.

JACOB DEKONING. 

